The day was February 12, 1809. The place was Shrewsbury, England. The person born there: Charles Darwin. With the publication of his classic, On the Origins of Species, Darwin set the wheels in motion for a dramatic transformation of the way human beings understand the world and how we came to exist in it . Here, seven speakers who’ve discussed what Darwin proposed on the TED stage:

Steven Johnson: Where good ideas come from
“Darwin himself, in his autobiography, tells the story of coming up with the idea for natural selection as a classic ‘eureka!’ moment. He’s in his study, it’s October of 1893 …”

Michael Pollan gives a plant’s eye view
“Who’s the more sophisticated species? Well, we’re all equally sophisticated. We’ve been evolving just as long, along different paths. It’s a cure for self-importance, a way to sort of make us feel the Darwinian idea.”

Dan Dennett: Cute, sexy, sweet, funny
“I’m going around the world giving talks about Darwin, and usually what I’m talking about is Darwin’s strange inversion of reasoning. Now that title, that phrase, comes from a critic …”

Dennis Dutton: A Darwinian theory of beauty
“How can we explain this universality? The best answer lies in trying to reconstruct a Darwinian evolutionary history of artistic and aesthetic tastes. We need to reverse-engineer them.”

Via the Nature blog The Great Beyond: a “rather wonderful graphic” from Ben Fry that tracks the changes across all six editions of The Origin of Species, as Darwin refined and developed his idea in print from 1859 to 1872.

“The idea that we can actually see change over time in a person’s thinking is fascinating,” says Fry. “Darwin scholars are of course familiar with this story, but here we can view it directly, both on a macro-level as it animates, or word-by-word as we examine pieces of the text more closely.”